Step 1: Materials
-the lid (optional)
-a pen (or something similar)
Step 2: Preparing the Bacon Grease
Fill a small pot with water and placed the jar of grease in the water. Turn on the heat and watch the grease melt.
Caution: Do not place the glass jar directly on the stove-top. The glass will shatter. See the third image.
Step 3: Preparing the Wick
Tie the string to the pen.
Caution: Do not use acrylic or synthetic fibers. When burned, they release toxic fumes. Stick to cotton cordage.
Step 4: Pouring the Grease and Setting the Wick
Take your wick/pen combo and place it on top of the tuna can, roughly in the center. If you want, you can tape the wrapped up cordage on the pen to keep it from moving.
Step 5: Let it Solidify
Step 6: Light it Up!
Also, if you have a can opener that opens the side (see picture), you can use the lid to close off the top to make it portable.
Disregard the writing on the can of the lid, courtesy of my roommate.